#app3 .squere{
    border: 1px solid green;
    width: 10vw;
    height: 10vw;
    margin-top: 10vw;
    margin-left: 10vw;
    transition: transform 1s ;
}
#app3 .squere.active{
    border-radius:50%;
    transform: translateX(15vw);
    
}
